Could you tell me more about vsd?

Variable: The heart has 2 pumping chambers, divided by a wall called the ventricular septum. A vsd is a ventricular septal defect, which means hole in that wall. The impact of such a hole depends primarily on the size of the hole. The vsd allows blood to go from the left ventricle to the right ventricle and then to the lungs, making excess pulmonary blood flow. Large defects need surgery, often in infancy.